What is Promptfoo?
Promptfoo is an innovative open-source tool designed to empower developers in rigorously testing, evaluating, and securing AI prompts. By facilitating structured, automated workflows across multiple large language models (LLMs), Promptfoo addresses a critical need for robust AI prompt management. This capability is essential for enterprises deploying AI solutions, ensuring consistent performance, mitigating risks, and optimizing user experiences. The platform's open-source nature fosters community collaboration and rapid iteration, accelerating the development of more dependable AI applications.
How much funding has Promptfoo raised?
Promptfoo has raised a total of $40.9M across 3 funding rounds:
Angel/Seed
$5M
Private Equity
$17.5M
Series A
$18.4M
Angel/Seed (2024): $5M with participation from Andreessen Horowitz
Series A (2025): $18.4M led by Insight Partners and Andreessen Horowitz
Private Equity (2025): $17.5M, investors not publicly disclosed
Key Investors in Promptfoo
Andreessen Horowitz
Andreessen Horowitz is a prominent venture capital firm known for investing in both early-stage startups and established growth companies, often focusing on disruptive technology sectors.
Insight Partners
Insight Partners is a global venture capital and private equity firm specializing in high-growth software and technology companies, providing capital and operational support for scaling businesses.
What's next for Promptfoo?
With the infusion of major enterprise-level funding and a recent strategic investment, Promptfoo is poised for accelerated growth and market expansion. The company is likely to focus on enhancing its platform's capabilities, expanding its integration ecosystem, and scaling its operations to meet increasing enterprise demand. Further development may include advanced security features, broader LLM support, and enhanced analytics for prompt performance. This strategic financing will enable Promptfoo to solidify its position as a leader in AI prompt engineering and assurance, supporting the responsible and effective deployment of artificial intelligence across industries.
See full Promptfoo company page
